The Honda CR-Z HPD gets a welcome power boost, thanks to a supercharger, high-flow fuel injectors and a recalibrated ECU. Power is up 67bhp to 185bhp, and the brakes and suspension have also been revised.

The Mazda CX-5 Urban Concept gets special matte black paint and 22-inch wheels. Mazda showed three tuned CX-5s, with the surfing-inspired CX-5 180 and diesel-powered CX-5 Dempsey also on display.

Designed with endurance racing in mind, the Mazda MX-5 Super25 has been given a sporty makeover, with a Sparco racing seat, harness and steering wheel inside, plus a PIAA light bar on the bonnet.

With this project, Bismoto has shown just how far it can push its turbocharging technology. Thanks to forced induction, the 1.8-litre engine in this Hyundai Elantra (i30) squeezes out 600bhp.

With 400bhp, this all-wheel drive Beetle features APR's own turbocharger, fuel system, intercooler, and ECU system. Handling is sharpened up with H&R suspension and Michelin Pilot Super Sport tyres.

Made to be comfortable enough for the everyday commute but sharp enough to cope with track racing, the Tanner Foust Ford Focus ST features adjustable suspension and a host of engine modifications.

Underneath the wide body and huge wheelarches, this modified Fiat 500 packs a punch. The four-cylinder engine has been heavily modified by Romeo Ferraris and pumps out 235bhp.

It's not just performance cars that get the tuning treatment. This Toyota Prius gets a huge fibre-optic lighting system, 16-speaker JBL sound system and a 17-inch touchscreen with Windows 7.

Tuner Daniel Song shows what can be done when Toyota gives you a Scion FR-S (GT-86 here) and $15,000 – this beast wouldn’t look out of place on the Japanese SuperGT grid.

Ford sells a dragster version of its Mustang muscle car in the US. This new version features a 5.0-litre V8 with the added bonus of a pair of turbos inspired by the ones used on Ford's EcoBoost engines.

Fisker has paired up with technology firm 3M for the SEMA show, and created four different wraps for its Karma saloon. The wrap on the display car will be changed every day, showing off each colour scheme.

Chevrolet is showing this COPO Camaro at SEMA. It's a 550bhp dragster convertible painted in unique inferno orange metallic paint. This car will be auctioned in January 2013 to benefit the American Heart Association.

TRD has added what they call an “exoskeleton” to its retro FJ's chassis, which allows more room to modify suspension and wheel setups. The engine has also been modified, taking total power to 345bhp.

Cosworth has worked its magic on this Hyundai Genesis Coupe, raising the power output by 41bhp to 389bhp, and improving the handling to match with its own brake, suspension and wheel setup.

The custom chassis and suspension setup of this Toyota Tundra offers up to 24 and 20 inches of suspension travel at the front and rear respectively. Power comes from a TRD supercharged 5.7-litre V8.

This Tundra won’t be struggling off road – it features a TRD big brake kit, 12-inch suspension lift system, and ATX wheels with Nitto Mud Grappler tyres. Plus, it has all the fishing gear you could possibly need...